Pokémon Contest! Hajitsuge Convention! - S7-E10
Continuity mistake: When Brock says that he and Grace make the perfect couple, part of Grace's right changes from skin-colour to yellow. (00:04:28)
Sing! Pokémon Trick House!! - S6-E39
Continuity mistake: When Ash tells Corphish to use Crabhammer, his bag disappears. (00:17:24 - 00:18:19)
Sing! Pokémon Trick House!! - S6-E39
Continuity mistake: When Seviper and Cacnea are affected by Screech, the green spikes on Cacnea turn yellow. (00:18:04)
What You Seed Is What You Get - S7-E1
Continuity mistake: When Natasha accuses Ash and his friends, the black stripe on Ash's hat turns red like the rest of the hat. (00:06:59)
Continuity mistake: When Ash asks what they know about losing, the brown linings on Brock's jacket turn orange. This also happens when Ash runs out of the Pokémon Center. (00:18:12)
Sing! Pokémon Trick House!! - S6-E39
Continuity mistake: At the beginning of the episode, May's bandanna changes from white with a red lining to red with a white lining. This also happens after the King of Tricks falls into the river. (00:00:02 - 00:11:28)
Try to Study! Pokémon Trainer's School! - S6-E15
Revealing mistake: When Anita says that Kenny does not care about Pokémon either, she is sitting in midair. (00:09:46)
On a Wingull and a Prayer - S6-E18
Continuity mistake: When the Team Aqua Grunt says that he will stop hurting Peeko if Mr. Briney gives him his boat, his glove disappears. (00:09:31)
All Things Bright and Beautifly! - S6-E13
Continuity mistake: When May says that Beautifly on her is not funny, the pattern on her bandanna changes from white with a red lining to red with a white lining. This also happens when she says that she has heard of Pokémon Contests. (00:01:58)
Try to Study! Pokémon Trainer's School! - S6-E15
Continuity mistake: When the camera pans to Ash's friends while they admire the view from the tower, Brock's right sleeve changes from brown to orange. (00:00:07)
Try to Study! Pokémon Trainer's School! - S6-E15
Continuity mistake: After Ash says that he was joking, the collar of Max's shirt changes from white to green. (00:01:24)
All Things Bright and Beautifly! - S6-E13
Continuity mistake: When Brock introduces himself to Janet, the black straps on his bag turn blue like the rest of the bag. (00:02:38)
All Things Bright and Beautifly! - S6-E13
Continuity mistake: When May says that Beautifly on her is not funny, Beautifly's white face turns grey several times. (00:01:58)
Revealing mistake: As Seviper slips back into the bush after Torchic trips on its tail, the end of its tail is cut off. (00:03:16)
Revealing mistake: When Ash and his friends run into the Pokémon Center, a line is briefly layered over them. (00:07:06)
Continuity mistake: When May asks when she and her friends will be stopping for lunch, Ash's bag disappears. (00:00:14)
Continuity mistake: When a downward camera view of Charizard going to the ground is seen, Ash, Pikachu, Noland, and the referee are on the ground, but in the next shot, they are on platforms. Also, there are markings on the ground, but in the next shot, they disappear. (00:11:48)
Island of Doctor Moroboshi! Fossil Pokémon Appear!! - S8-E10
Revealing mistake: When Armaldo leaves the laboratory, it clips through a wall. (00:12:13)
Other mistake: When Juan says, "I won my five ribbons and entered the Grand Festival," his reflection in his tea is not reversed. (00:08:05)
Enter Those Three! Referee School Island! - S7-E52
Continuity mistake: When Ash, Max, May, and Jimmy ask, "Huh?" the visor on Ash's hat goes from red to black. (00:16:47)
Answer: He is a good guy but just found himself in a bad situation when he worked for Lysander. He didn't want him to harm Ash and his Pokémon when he was trying to get the special bond between Ash and his Greninja to work. He does leave Lysander and go back to being a good person.